Apparatus and method of manufacturing display using light emitting element

Abstract

Discussed is an apparatus and a method of manufacturing a display using a micro light emitting diode (LED). A method of manufacturing a display device using a light emitting element includes providing a substrate having an individual pixel position defined by a pair of assembly electrodes; moving the light emitting element including a magnetic body on to the substrate using a magnetic chuck having an electromagnet; assembling the light emitting element at the individual pixel position using the magnetic chuck; and recovering a remaining light emitting element which is not assembled at the individual pixel position using the magnetic chuck.

What is claimed is: 
     
         1 . An apparatus for manufacturing a display device, the apparatus comprising:
 a plate to support a substrate including an individual pixel position;   a supplier to supply a multitude of light emitting elements including magnetic bodies to a first side of the substrate, respectively; and   a magnetic chuck configured to be movable in X, Y and Z directions perpendicular to each other on a second side of the substrate and to assemble a light emitting element among the multitude of light emitting elements at the individual pixel position of the substrate using an electromagnet of the magnetic chuck,   wherein the magnetic chuck comprises a power supplier to supply a power to the electromagnet of the magnetic chuck, and   wherein the power supplier is configured to:   supply a first current to the electromagnet of the magnetic chuck to move the light emitting element to the individual pixel position;   supply a second current to the electromagnet of the magnetic chuck to assemble the light emitting element to the individual pixel position; and   supply a third current to the electromagnet of the magnetic chuck to recover a remaining light emitting element among the multitude of light emitting elements.   
     
     
         2 . The apparatus of  claim 1 , wherein the magnetic chuck further comprises:
 a metal tip of a cylindrical rod configuration;   a coil coupled to the metal tip; and   a rotating mechanism rotating the metal tip.   
     
     
         3 . The apparatus of  claim 2 , wherein the rotating mechanism rotates the metal tip within a predetermined radius about the magnetic chuck. 
     
     
         4 . The apparatus of  claim 2 , wherein the magnetic chuck comprises a multitude of metal tips and coils provided with a predetermined spacing. 
     
     
         5 . The apparatus of  claim 1 , wherein the magnetic chuck comprises a head having a multitude of metal tips. 
     
     
         6 . The apparatus of  claim 1 , wherein the supplier includes a tray configured to move in a direction with respect to the substrate and to supply the multitude of light emitting elements. 
     
     
         7 . The apparatus of  claim 1 , wherein a size of the first current is greater than a size of the second current, and wherein a size of the third current has a level between the size of the first current and the size of the second current. 
     
     
         8 . The apparatus of  claim 2 , wherein among the coil and the metal tip, the metal tip is located closer to the substrate than the coil. 
     
     
         9 . An apparatus for manufacturing a display device, the apparatus comprising:
 a support plate to support a substrate;   a supplier to supply a plurality of light emitting elements to a first side of the substrate; and   a magnetic chuck located on a second side of the substrate and configured to assemble a light emitting element from among the plurality of light emitting elements to an individual pixel position on the second side of the substrate using an electromagnet of the magnetic chuck,   wherein the magnetic chuck comprises a power supplier to supply a power to the electromagnet of the magnetic chuck, and   wherein the power supplier is configured to:   supply a first current to the electromagnet of the magnetic chuck to move the light emitting element to the individual pixel position;   supply a second current to the electromagnet of the magnetic chuck to assemble the light emitting element to the individual pixel position; and   supply a third current to the electromagnet of the magnetic chuck to recover a remaining light emitting element from among the plurality of light emitting elements.   
     
     
         10 . A method of manufacturing a display device that uses a plurality of light emitting elements, the method comprising:
 utilizing the apparatus of  claim 9  to locate the plurality of light emitting elements on the substrate by processes of:   supplying the first current to the electromagnet of the magnetic chuck to move the plurality of light emitting elements to individual pixel positions including the individual position;   supplying the second current to the electromagnet of the magnetic chuck to assemble the plurality of light emitting elements to the individual pixel positions; and   supplying the third current to the electromagnet of the magnetic chuck to recover the remaining light emitting element from among the plurality of light emitting elements that are not assembled to the individual pixel positions.